FWIW: I had another two S8 picked up and unboxed today and can confirm they also behave the same in terms of system load peaks.
Edit: Nothing more on any latency or connection issues, BUT, I noticed that the peaks are very synced throughout all my now three switches and also the AP6 Pro. It occurs once every 60 s. See attached screenshots below.
There are also out of sync peaks in between those 60 s. And, the peak occurs for the AP6 Pro as well, although not as high.
